Just repeating something I heard that Herb Mcandless said decades ago, "you will need a 600 HP big block to drive past a 500 HP small block",or something VERY close to that, it's been a long time and I've thought about it over the years and I thought he followed it up with "And you can't leave 600 HP turned on for very long without doing non engine related damage" I spose when you think it through, the small block is probably going to leave the line harder [less torque turning the tyres] around 200 lbs. less weight on the front of the car, Maybe a 904 instead of the 727 and the big block is going to still need a bit up it's sleeve to drive by.......I thought it was still and interesting statement!